US Patent 10890108 Exhaust gas bypass device and supercharger

This exhaust gas bypass device and supercharger are provided with: an actuator (31) for moving a driving rod (41) reciprocally in the axial direction of the driving rod; a coupling rod (32) coupled to the tip section of the driving rod (41); a support shaft (34) rotatably supported on a housing; a coupling link (33), one end section of which is rotatably coupled to the tip section of the coupling rod (32) via a coupling shaft (45) and the other end section of which is fixed to the one end section of the support shaft (34); a waste gate valve (35) coupled to the other end section of the support shaft (34); and a damping member for damping displacement between the coupling rod (32) and the coupling link (33), whereby reliability is improved by ensuring desirable operative characteristics.